[Fot] TR3 using TR4A manifold

[Dave Riddle]

This is how Bob Schaller configured Carbs on the TR3 I have. Note it is also running the longer intake

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Dave Riddle
602.692.5276

From: Fot <fot-bounces at autox.team.net> On Behalf Of Philip Gott via Fot
Sent: Sunday, August 3, 2025 4:59 PM
To: Greg Blake <gblake58tr3 at icloud.com>
Cc: Fot <fot at autox.team.net>
Subject: Re: [Fot] TR3 using TR4A manifold

Greg;
You could consider swapping the carbs, putting the float bowls between the carbs. I don’t know if there is enough room to do that, but I think the Volvo B18 engine had HS6’s with the float bowls between the carbs.
Phil


Sent from my iPhone

> On Aug 3, 2025, at 6:43 PM, Greg Blake via Fot <fot at autox.team.net<mailto:fot at autox.team.net>> wrote:
>
> Howdy folks. Have a street car question for yall. Assembly of Will’s car continues and I was test fitting the carbs and manifold I was planning to use. It’s a TR4A intake paired with HS6s. This is what I use on the TR3 race car. On the street car, the rear float is very close to the heater bulkhead fitting (see pictures). Has anyone done this on a street car and have a good solution to this interference? It looks like we could move the bulkhead fitting over by about 3-4” w/o issue, just hate to put another hole in the firewall.
>
> Appreciate ideas.
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>
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